Re: Parallelism a la make -j <n> / GNU parallel

[Chet Ramey]

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On 5/4/12 2:53 PM, Mike Frysinger wrote:

> it might be a little racy (wrt checking cnt >= 10 and then doing a wait), but 
> this is good enough for some things.  it does lose visibility into which pids 
> are live vs reaped, and their exit status, but i more often don't care about 
> that ...

What version of bash did you test this on?  Bash-4.0 is a little different
in how it treats the SIGCHLD trap.

Would it be useful for bash to set a shell variable to the PID of the just-
reaped process that caused the SIGCHLD trap?  That way you could keep an
array of PIDs and, if you wanted, use that variable to keep track of live
and dead children.

Chet
- -- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/
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